What each metric means

Precise definitions so numbers can be compared honestly.

Updated Sep 10, 2026 1 min read
  • Sent — messages handed to the sending infrastructure
  • Delivered — accepted by the recipient's server
  • Opens — a tracked open was registered; requires tracking and image loading
  • Clicks — a tracked link was followed
  • Replies — a reply threaded back to the send
  • Positive replies — replies you or your team marked as interested or better
  • Bounces — rejected; hard bounces are permanent, soft bounces temporary
  • Unsubscribes — recipients who opted out
  • Failed sends — messages that could not be sent at all

Important notes

Rates are computed against sent volume for the selected range. Comparing a one-day range with a ninety-day range will mislead you.

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